Cicadas like singing a happy song in the summer afternoon.

夏日午后，蝉像在唱一首欢乐的歌。

youdao

Thee little apple tree and the old apple tree sang a happy song again.

小苹果树和老苹果树又唱起了欢快的歌。 。

youdao

It is a happy song about being open to love and life's possibilities.

VOA: special.2010.01.29

He sings a song in which he recalls all of those happy days that he had spent with his shepherd friend in the countryside.

歌中唱的是他与牧羊人朋友,在乡村度过的快乐日子。

耶鲁公开课 - 弥尔顿课程节选

For music-lovers, this is a happy song.

ECONOMIST: A new song

He sure managed to sing a very happy song which turned out to be very off key for anyone who bought the mezzanine shares or the IPO.

FORBES: Don't Cry For Groupon's Andrew Mason

Some buy Polish innovations (in genetics, for instance) for a song, others are happy to wait until patents expire, then grab the technology.

ECONOMIST: Polish education